Provided is an integrated high-voltage electric energy intelligent metering device specially used for T-connecting positions of a ring network line or in a ring main unit, intelligent metering can be realized, and a method and a device for checking and processing metering abnormity or calculating line loss can be realized. A high voltage method sampling is measured by the adoption of a current method, equivalent voltages at the T-connecting position is distributed to other metering loops, and errors caused by a corresponding T-connecting circuit number are compensated. Each branch line only takes the current and is connected to a corresponding metering unit, mutual logical relations between the circuits are established according to the direction of power supply, and when the metering data is not in accordance with the logical relation or the logical relation error is above a set value, corresponding processing is performed. Each circuit employs intelligent metering, the metering logical relations of the circuits are processed in an intelligent manner, the metering abnormity is checked or the line loss at the T-connecting position is calculated, and functions of open-type daily freezing, the maximum amount, and automatic report of load curves etc. can also be realized. According to the device, data is transmitted to a main station in various methods or a cellphone is managed via a communication terminal, and management personnel can be informed in time.